Skip EATT connect for legacy devices

EATT was introduced in Bluetooth version 5.2. Some older devices
disconnect the link or otherwise misbehave when try to connect EATT.
Skip connecting EATT for peripherals with LMP version < 5.2.

Bug: 284511042
Test: m aosp_raven-userdebug
Manual; connect 5.2 device and check EATT connects. Connect legacy
device and check EATT doesn't connect.

Change-Id: I60a80431bab1615cee344c6a95dafaca9520d58c